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Start your free trialNgqabutho Moyo
2,538 PointsI'm getting errors
I'm stuck on the Flask project - I keep getting errors and I don't understand where I'm going wrong
1 Answer
Tyler Duvall
Python Development Techdegree Graduate 11,791 PointsPost your code and task your on so we can see and help.
Ngqabutho Moyo
2,538 PointsTACOCAT.PY
from flask import Flask, g, render_template, flash, redirect, url_for from flask.ext.login import LoginManager, login_user, logout_user, login_required, current_user from flask.ext.bcrypt import check_password_hash
import models import forms
DEBUG = True PORT = 8000 HOST = '0.0.0.0'
app = Flask(name) app.secret_key = 'let this be the secret key'
login_manager = LoginManager() login_manager.init_app(app) login_manager.login_view = 'login'
@login_manager.user_loader def load_user(userid): try: return models.User.get(models.User.id == userid) except models.DoesNotExist: return None
@app.before_request def before_request(): """Connect to database before each request""" g.db = models.DATABASE g.db.connect() g.user=current_user
@app.after_request def after_request(response): """Disconnect from database after each request""" g.db.close() return response
@app.route('/register', methods=['GET', 'POST']) def register(): form = forms.RegisterForm() if form.validate_on_submit(): flash('Registered successfully', 'success') models.User.create_user( email= form.email.data, password=form.password.data ) return redirect(url_for('index')) return render_template('register.html', form=form)
@app.route('/login', methods=['GET', 'POST']) def login(): form = forms.LoginForm() if form.validate_on_submit(): try: user = models.User.get(models.User.email == form.email.data) except models.DoesNotExist: flash("Your email or password don't match", "error") else: if check_password_hash(user.password, form.password.data): login_user(user) flash('Logged in successfully', 'success') return redirect(url_for('index')) else: flash("Your email or password doesn't match", "error") return render_template('login.html', form=form)
@app.route('/logout') @login_required def logout(): logout_user() flash('Logged out successfully', 'success') return redirect(url_for('index'))
@app.route('/taco', methods=['GET', 'POST']) @login_required def taco(): form = forms.TacoForm() if form.validate_on_submit(): models.Taco.create(user=g.user._get_current_object(), protein=form.protein.data, shell=form.shell.data, cheese=form.shell.data, extras=form.extras.data.strip() ) flash('Taco has been added', 'success') return redirect(url_for('index')) return render_template('taco.html', form=form)
@app.route('/') def index(): tacos = models.Taco.select().limit(10) return render_template('index.html', tacos=tacos)
if name == 'main': models.initialize() try: with models.DATABASE.transaction(): models.User.create_user( email='moyongqaa@gmail.com', password='password' ) except ValueError: pass
app.run(debug=DEBUG, host=HOST, port=PORT)
MODELS.PY
from peewee import * import datetime from flask.ext.login import UserMixin from flask.ext.bcrypt import generate_password_hash
DATABASE = SqliteDatabase('taco.db')
class User(UserMixin, Model): email = CharField(unique=True) password = CharField(max_length=100)
class Meta:
database = DATABASE
def get_tacos(self):
return Taco.select().where(Taco.user == self)
def get_stream(self):
return Taco.select().where(Taco.user == self)
@classmethod
def create_user(cls, email, password):
try:
cls.create(
email=email,
password=generate_password_hash(password)
)
except IntegrityError:
raise ValueError('User already exists')
class Taco(Model): user = ForeignKeyField(rel_model=User, related_name='tacos') protein = CharField(default=None) shell = CharField() cheese = BooleanField(default=False) extras = TextField()
class Meta:
database = DATABASE
def initialize(): DATABASE.connect() DATABASE.create_tables([User, Taco], safe=True) DATABASE.close()
FORMS.PY
from flask_wtf import Form from wtforms import StringField, PasswordField, BooleanField, TextAreaField from wtforms.validators import DataRequired, Length, EqualTo, ValidationError, Email from models import User
def email_exists(form, field): if User.select().where(User.email == field.data).exists(): raise ValidationError('User with that email already exists')
class RegisterForm(Form):
email = StringField('Email', validators=[DataRequired(), Email(), email_exists])
password = PasswordField('Password', validators=[DataRequired(), Length(min=8), EqualTo('password2', message='Passwords must match')])
password2 = PasswordField('Confirm Password', validators=[DataRequired()])
class LoginForm(Form): email = StringField('Email', validators=[DataRequired(), Email()]) password = PasswordField('Password', validators=[DataRequired()])
class TacoForm(Form): protein = StringField('Protein', validators=[DataRequired()]) shell = StringField('Shell', validators=[DataRequired()]) cheese = BooleanField('Cheese') extras = TextAreaField('Any extras?')
TEMPLATES/LAYOUT.HTML
<!doctype html> <html> <head> <title>Tacocat</title> <link rel="stylesheet" href="/static/css/normalize.css"> <link rel="stylesheet" href="/static/css/skeleton.css"> <link rel="stylesheet" href="/static/css/tacocat.css"> </head> <body> {% with messages=get_flashed_messages() %} {% if messages %} <div class="messages"> {% for message in messages %} <div class="notification"> {{ message }} </div> {% endfor %} </div> {% endif %} {% endwith %}
<div class="container">
<div class="row">
<div class="u-full-width">
<nav class="menu">
{% if current_user.is_authenticated() %}
<a href="{{ url_for('logout') }}" title="Log out">Log Out</a>
<a href="{{ url_for('taco') }}" title="Create taco">Create Taco</a>
{% else %}
<a href="{{ url_for('login') }}" title="Log in">Log In</a>
<a href="{{ url_for('register') }}" title="Sign up">Sign Up</a>
{% endif %}
</nav>
{% block content %}{% endblock %}
</div>
</div>
<footer>
<p>An MVP web app made with Flask on <a href="http://teamtreehouse.com">Treehouse</a>.</p>
</footer>
</div>
</body> </html>
TEMPLATES/INDEX.HTML
{% extends 'layout.html' %}
{% block content %} <h2>Tacos</h2> {% if tacos.count() %} <table class="u-full-width"> <thead> <tr> <th>Protein</th> <th>Cheese?</th> <th>Shell</th> <th>Extras</th> </tr> </thead> <tbody> {% for taco in tacos %} <!-- taco attributes here --> {% endfor %} </tbody> </table> {% else %} <!-- message for missing tacos --> {% endif %} {% endblock %}
Megan Amendola
Treehouse TeacherMegan Amendola
Treehouse TeacherHi! Which Flask project are you talking about? A code challenge or the Techdegree project?